Piston-head construction



J. E. SULLIVAN.

PISTON HEAD CONSTRUCTION.

APPLICATION men MAY 2, 1922.

Patented 1360.5,1922- 2 SHEETS-SHEET I.

1. E. SULLIVAN.

PISTON HEAD CONSTRUCTION. APPLICATION FILED MAY 2, 1922.

1,437, 69, Patented Dec.-5,1922.

2 SHEETSSHEET 2.

gmentoz IZ Sullivan 74 z'Z7 7?.55e.s.-' Q r I v v v M Patented cc. 5, 1922..

JAMES -E. SULLI'VAN, JACKSON, OHIU.

rrsron-nnan oolvsraoorron.

Application filed May 2,

of Ohio, have invented new and usefullmprovements in Piston-Head Constructions, of which the followlng 1s a speclfication. In, carrying out the present invention t is my purpose to provide, a piston head which willbe constructed in such manner that the life of the piston head as a whole will be greatly increased and wherein the disadvantages and troubleincident to theouter wall ofthe piston head, ina horizontal engine, wearing out ofround will be minr mized.

It is also my purpose .to prOVidea piston head which will be constructed in such manner. that the outer periphery. or wearing surface may be adjusted circumferentially of thecore ofthe head, so as totake" up for wear, and wherein such wearing surfacen ay be replaced when entirely worn out.

Furthermore, I aim to provide a construction of piston head which may be manufactured and marketed at small cost and wherein the component parts will be so arranged and corelatedas to reduce the possibility of derangement to a minimum and enable such parts to be adjusted quickly and conveniently in order to provide for the taking up of wear and the replacing of the worn surfaces.

Nith the above recited objects in view,

'- and others of a like nature, the invention resides in the construction, combination and arrangement of parts set forth in and falling within the scope of the appended claims.

In the accompanying drawings Figure 1 is a view in side elevation of a piston head constructed in accordance with my invention, the same being shown in a horizontal cylinder, the latter being in section.

Figure 2 is a vertical sectional view through my improved piston head.

Figure 3 is an end elevation thereof. Figure 4: is a view in elevation of one of the bull rings.

Figure 5 is a similar view of the core. Referring now to the drawings in detail, A designates my improved piston construction. as a unit. In accordance with my invention this piston comprises a core or body portion 1 having the opposite surfaces thereportions of the flangeso, asshown in F 1922. sens; are. 557,314.

of concaved in the present instance, as at 2 The outer periphery of the core or body 1 at the-marginal edges thereof israbbeted as at 3.' i

Encircling the periphery of the core 1 arebull ringsd a snugly engaging the core 1 and having their confronting edges in contact with each other, as illustrated in Figure 2, and their outer edges attheinner surfaces formed, respectively, with inwardly projecting flanges 5 that seat within I the rabbeted portions 3 in the core.

In the present instance, the vertical walls of the rabbeted portions of the core or body 1 are equippedwith stud bolts 6 spaced apart around the core equal distances. These bolts pass through bolt holesin the flanges Sand the outer ends thereof are provided ,withnuts 7 that are seated in countersunk ure 2.

In the present form of my invention I employ eight of these bolts on each side of the piston head, so that the bull rings may be adjusted circumferentially of the piston head to eight diiferent positions, in order that any wear on the lower side of the bull rings which constitute the wearing surfaces, incident to the horizontal travel of the piston in the cylinder, may be taken up.

In Figure 1 of the drawings I have shown my improved piston head as arranged within a horizontally disposed steam cylinder provided with steam passages leading into the respective ends thereof. It is obvious, of course, that my improved piston head may be used in connection with any engine, compressor or other machine employing pistons and at its center the body or core 1 is formed with a transverse bore in which is seated and appropriately fastened one end of the piston rod 8.

' From the foregoing description, taken in connection with the accompanying drawings, it will be seen that I have provided a piston head that is constructed in such manner that the bull rings may be adjusted around the core to a number of different positions, thereby enabling wear on any '105 part of the wearing surfaces of the piston to be taken up and wherein the bull rings may be replaced when completely worn out and furthermore it will be seen that by means of my improved piston construction the diameter of the piston may be changed by employing bull rings of various diameters.

In accordance with my invention the outer surfaces of the respective bull rings 4: are formed with annular grooves 9 and fitted within these grooves are packing rings 10 designed to engage the cylinder Wall, so as to form. a fluid tight joint between the piston head and cylinder.

While I have herein shown and described one preferred form of my invention byway of illustration, I wish it to be understood that I do not limit or confine myself to the precise details of construction herein shown and described, as modifications and variations may be made within the scope of the claims and without departing from the spirit of my invention.

Having thus described my invention,What is claimed as new, is z- 1. In a piston head, a core or body portion formed at the marginal edges of its periphery with rabbeted portions, bull rings encircling said core or body portion at the periphery thereof and having their inner edges in face to face contact, securing flanges formed on the outer edges of said bull rings at the inner peripheries thereof and seated in said rabbeted portions and means for fastening said flanges in said rabbeted portions.

2. In a piston head, a core or body por tion formed at the marginal edges of its periphery with rabbeted portions, bull rings encircling said core or body portion at the periphery thereof and having their inner edges in face to face contact, securing flanges formed on the outer edges of said bull rings at the inner peripheries thereof and seated in said rabbeted portions, stud bolts carried by the vertical walls of said rabbeted portions and extending through bolt holes formed in said flanges and nuts threaded upon the outer ends of said stud bolts and seated in countersunk portions of said flanges.

3. In a piston head, a core or body portion formed at the marginal edges of its periphery with rabbeted portions, bull rings encircling said core or body portion at the periphery thereof and having their inner edges in face to face contact, securing flanges formed on the outer edges of said bull rings at the inner peripheries thereof and seated in said rabbeted portions, stud bolts carried by the vertical walls of said rabbeted portions and extending through bolt holes formed in said flanges and nuts threaded upon the outer ends of said stud bolts and seated in countersunk portions of said flanges, the outer surfaces of said bull rings being formed with packing ring grooves and packing rings disposed within said grooves.

In testimony whereof I afliX my signature.

JAMES E. SULLIVAN. 

